Evacuation orders, warnings issued for fire burning near Ventura County's Lake Piru

Evacuation orders and warnings were issued on Saturday afternoon after a quickly moving brush fire broke out near Lake Piru in Ventura County. 

The blaze was first reported near the 6700 block of Holser Canyon Road at around 1 p.m., according to the Ventura County Fire Department. Crews said that the fire was estimated at around 20 acres at the time as it burned in light to medium brush.

At around 4 p.m., firefighters said the fire had burned 167 acres. 

Evacuation orders were issued for those living in:

• LAKP-02
• LAKP-04
• LAKP-05
• LAKP-06
• LAKE PIRU

Warnings were issued in both Ventura and Los Angeles counties, including in zones:

• PIRU-01
• PIRU-14
• CDER-01
• CAS-GOLDENSTATE-B
• CAS-GOLDENSTATE-D
• CAS-OAKCANYON
• CAS-VALVERDE-B

The cause of the fire remains under investigation. No injuries have been reported and its unclear if any structures were immediately threatened by the blaze. 

More than 200 firefighters were assigned to the battle the fire, and multiple water-dropping aircrafts were also assisting with the firefight.

At 3 p.m., VCFD officials said that crews were making "excellent progress from both the air and ground." 

"The early arrival of helicopters and fixed-wing aircraft has significantly supported suppression efforts," firefighters said. 

This is a developing story. Check back for details.